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After Copy Fail, a new Linux kernel vulnerability was uncovered and disclosed today, called “Dirty Frag”, which is quite similar to Copy Fail as it allows a local user to escalate their privileges to gain root access.
Dirty Frag is a local privilege escalation vulnerability affecting Linux kernel modules that support ESP (Encapsulating Security Protocol), one of the protocols used in IPsec (Internet Protocol Security). This vulnerability is actually split into two CVEs, CVE-2026-43284 and CVE-2026-43500 (NVD entry pending).
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